Lace-making machine.



W. BISDORP.

LACE MAKING MACHINE.

APPLIUATION FILED SEPT. e, 1911.

Patented July 16 1912.

4 SHEETS-SHEET 1.

W. BISDORP.

LACE MAKING MACHINE.

APPLIOATION FILED SEPT. 6, 1911.

1,032,373, Patented July 16, 1912.

w. BIS DORP. LACE MAKING MACHINE. APPLICATION FILED SEPT. 6, 1911.

1,032,373, 1 Patented July 16, 1912.

, 4 SHEETS$HEET 3. (%4 v W. BISDORP.

LACE MAKING MACHINE. APPLICATION FILED SEPT. e, 1911.

1,03%?3. Patented July 16, 1912.

4 SHEETS-SHEET 4. -z

WILHELM BISDORF, OF BARMEN, GERMANY, ASSIGNOR TO THE FIRM A. W. NAGEL,

F BARMEN, GERMANY.

LACE-MAKING MACHINE.

Specification of Letters Patent.

PatentedJuly 16, 1912.

, Application filed September 6, 1911. Serial No. 647,962.

To all whom it may concern:

Be it known that I, WILHELM BISDORF, a

subject of the German Emperor, and residing at Barmen, Germany, have invented certain new and useful Improvements in Lace- Making Machines, of which the following is a specification.

My invention relates tolace-braiding machines in which the number of bobblns is equal to the number of heads or plates, and a primary object is'to provide a machine of this type for making lace comprising weblike spots.

For making. patterned braids on braidingmachines it is well-known to employ special weft threads which are inserted between the shed-forming bobbin threads at right? angles to the length of the braid produced by the bobbins. For forming these patterns, however, braiding machines are used comprising groups of heads arranged together in rows and connected by points, the bobbins being able to occupy shed-forming positions on the groups of heads, while under the braiding place are arranged two devices which are movable inthe direction of the longitudinal axis of the machine and insert the weft.

In contradistinction thereto, by means of my improved lace-braiding machine, 2'. 6. one comprising heads or plates arranged in a circle, the number of which is equal to I the number'of bobbins, the lace patterns being made by temporarily stopping the bobbins, web-like spots are made in or on the lace fabric by a shuttle which moves fora ward and backward along a circular race, or

runs around in a circle above or below the braiding threads, and inserts the weft thread into the sheds made by lifting individual bobbinthr'leads of stationary bobbins. These sheds are forined by jacquard pattern gear and the length of the path of the shuttle during its reoiprocatory motion or the number of complete circuits of the same is likewise determined by a jacquard pattern gear which influences a device comprising reversing gear. One illustrative embodiment of my invention is represented by way of example in the accompanying drawings, wherein Figure 1 shows my lace-braiding machine partly in elevation, and partly in vertical section through the middle. Fig. 2 represents, enlarged, a part of the mach ne 1n vertical section, and Fig. 3 a portion in top plan view on' the horizontal section according to A-B in Fig. 2. Fig. 4 is a front elevation, Fig. 5 a top planview and Fig. 6 a section of the shuttle. Figs. 7 and 8 are front elevation and top plan view on the section according to C- D, respectively, of the change gear for the drive of the shuttle. Fig. 9 dia ra-mmatically shows. a lace-fabric having we -like spots woven therein.

Referring to the drawings, on thetop plate a of the machine the bobbins 0 are moved in the race 6 in known manner and temporarily stopped according to the pattern to be obtained. A ring h, carried by bolts g by a frame 9 above the machine, is arranged above the threads of the bobbin spools which unite in the braid-ring 0 and are plaited on a mandril d which is likewise well known. The ring possesses at its lower edge a circular race h for a shuttle 5 (Figs. 2 and 4 to 6) from whose'spool i, the weft thread '5, is likewise led to the ring 0. On the stationary ring it is guided in a suitably turned guide a toothed rim is meshing with a number of gears m distributed at equal distances apart around the stationary ring h. Each of these gears is fast on an axle m journaled in a bearing m, bolted to the outer periphery of the ring it. The lower. end of this axle m, projects beyond the bearing m and carriers a second gear at which by meshing in a toothed rack i of the shuttle drives the same in the race 7b,. The toothed rim 7c is rotated right-handedly or left-handedly by a pinion 9 (Fig. 1) fast on v the axle p, which is suitably journaled in the frame 9 and rotated through the medium of a set of gears 19,, p 77,, p, by a shaft 9. Consequently the toothed rim 7c is rotated in a direction corresponding to the direction of rotation of this shaft, and consequently the shuttle, whose toothed rack 6 constantly meshes with two of the gears 01., is reciprocated.

The lower edge of the fixed ring it is provided with recesses h at equal distances apart, each of which is above one of the bob-.

8, provided at its upper end and brings the same, as shown in Fig. 2, into a position in which its portion located toward the ring is over the shuttle i. The height of the recesses ]L2 is such that the raised thread has sufficient room upward. The lifter has laterally depending wings 8 which when descending prevent those threads of the ad-,

- jacent bobbins being caught which are not raised but go to the ring 0. According to the form shown the arms 1' are fast on a ring a which is carried by holders u, bolted to the top plate of the machine. The lifters are under the influence of a special jacquard pattern 'ear arranged at a suitable place in the mac line, its hooks being connected by rods 3 and bell-crank levers 1 with bellcrank leversz which are fulcrumed in a circle on a circular plate a: under the lacebraiding machine and are connected by rods 2 with the levers t.

The right-handed. and left-handcd rotation of the shaft q, which transmits its motion, as mentioned above, to the toothed rim is, is brought about by change gear which, according to the arrangement shown in the drawing, is arranged on the bottom plate of the machine and is represented in Fig. 1 in side elevation and in Figs. 7 and 8 on an enlarged scale. The one or the other of the clutch gears 1 and 2 can be caused to engage with the pinion g, on the shaft 9; these gears 1 and 2 are on clutch sleeves 3' and 4:, respectively, which are arranged axially displaceable on the hubs of gears 5 and -6, respectively, under the pinion 9 When the gears 1, 2 are in their raised position, as is the case with gear 1 in Fig. 7, they are out of engagement with'the pinion g, and each is also disconnected from the appertaining gear 5 and 6. As clutching means catches 7 and 8 may serve which engage'in corresponding recesses in the gears 1 and 2. Further, fast on the clutch sleeves 3, 4 are projections 13, 14 extending over inclinedways 15, 16 which can execute short rotatory mot-ions about pivots 17 and 18, respectively (Fig. 8). These rotatory motions are brought about by vertically movable, spring-lifted cones 19 and 20 to which are connected bolts 21 and 22, respectively, whose ends extend below the bottom plate of the machine. When moving downward the cones engage in corresponding bores 30 and 31, respectively of the arms carrying the inclined ways 15, 16 and press these laterally according to the slant of the walls of the cones against the action of springs 25 and 26, respectively, whereupon the inclined ways pass out of the path of the project-ions 13, 14.

The inclined ways bring about the lifting of the clutch sleeves when the ways are located in the path of the projections 13 or 14, as is shown" for the way 15 at the left of Figs. 7 and 8, the projections 13 running on the way 15 at the lowest part thereof, and moving upward during the subsequent rotation. This takes place until the gear 1 is disconnected from the pinion 9 the dis connection with the gear 5having previously taken place. In the highest position the. projections 13, 14 are stopped at stops 23, 24:,provided at the end of the inclined ways.

In order specially tosecure the elevated position of the gears 1 and 2 forks 9 and 10 may be provided engaging in grooves in the clutch sleeves, said forks being secured on bolts 11, 12 which are guided in the frame 6 of the change gear, and under which forks elastic catches engage which (not shown in the drawings) are so connected with the cones 19, 20 that they are disconnected when the cones descend.

The gears 5 and 6 meshing one in another and consequently rotating in opposite directions are maintained constantly rotating by a gear 27 driven by the machine. Now when one of the cones is pulled and the appertaining projection, e. g. 16 at the right hand of Figs. 7 and 8, is released, the clutch sleeves slide downward, the clutch is connected, and simultaneously the gear 2 on the sleeve meshes with the pinion g, and is consequently rotated. The shaft g is then rotated to the right in the direction shown by the arrow as long as the cone 20 is maintained in its lower position. If, however, after the gear' 2 is disconnected from the pinion 9,, the gear 1 meshes with the pinion 9 which occurs when the cone 19-is pulled, the shaft 9 is rotated in the opposite direction. If both the cones are in their highest position the shaft 9 is stationary.

The change in the position of the cones is brought about by the pattern gear M, e. g. Jacquard pattern gear, which can simultaneously serve for controlling the stopping devices of the bobbins, two hooks 28, 29 being connected with the bolts 21, 22 by suitably assembled rod and lever mechanism o and 20 mounted in the bottom frame of the machine.

Now the manufacture of weblike spots in the m ddle of lace as shown in Fig. 9 is obtained by a suitable number of the bobbin' threads traversing the lace being used for forming the sheds by means of the lifters s. The suitable change of shed is brought about by the Jacquard pattern gear influencng the lifters, while the shuttle i is driven to and fro by the toothed rim is above the part of the bobbin race at which the bobbins braid the middle of the lace. The rotation of the toothed rim which guides the shuttle to or at the said place and the changing rotation in the one and in the other direction is brought about by the change gear in consequence of. the corresponding adjustment tion and, lastly,

of the cones by the pattern gear M in the above described manner. The shuttle thread 5, (Fig. 9) is thereby woven with the bobbin threads until the desired length of the spots is obtained. The shuttle thread can then,

as in the example Fig. 9, be guided by a correspondingly wide circuitous motion of the shuttle to the edge of the lace and on the way there be worked both'into the edge by suitable formation of shed and into the lace fabric. In order to make the next spot the shuttle is guided again above the part of the bobbin race in question and there moved to and, fro. The breadth of the spot is of course dependent on the length of the path along which the reciprocating motion of the shuttle takes place. After. the last weft thread has been inserted, the shuttle can be stopped at the end of the race and the weft thread not plaited; this then simply runs in the braided fabric from one spot to another, as indicated in Fig. 9 in dotted lines.

It will be readily understood that the weblike formations may have the most various forms and be made at any desired parts in the lace. Also, patterns can be made superposed upon a lace ground-Work when the lace-braiding machine possesses surplus bob bin places or, as is said, when the machine is worked with lacking spools. The shuttle can also run around repeatedly in one direcit may be. noted that a second shuttle may be arranged opposite the outside shuttle, i. 6. inside the ring mounted above the braiding threads, and be driven by inner toothing of the toothed rim. Further, two or more shuttles may be arranged one above another both inside and outside thering. I claim Y 1. The combination, with a lace-braiding machine comprising a plurality of heads or plates arranged in a circle, means for rotating the same, and a plurality of bobbins adapted to be driven by the heads or plates, of pattern-gear-controlled means for forming sheds of threads extending from temporarily stationary bobbins .tothe middle of the circle, a horizontal, circular shuttle race arranged in the plane of the said sheds, a shuttle movable in the said shuttle race, and means for driving the said shuttle to and fro in the said shuttle race.

2. The combination, with a lace-braiding machine comprising a plurality of heads or plates arranged in a circle, means for rotating the same, and a plurality of bobbins adapted to be driven by the heads or plates,

of pattern-gear-controlled means for form- 1 ing sheds of threads extendin from temporarily stationary bobbins to't e middle of the circle, a horizontal circular shuttle race shuttle movable in tating the same,

a shuttle movable in said race,

vthereln,

arranged in the plane of the said sheds, a the said shuttle race, means comprising change gear for driving the said shuttle to and fro in the said shuttle race, and pattern gear said change gear.

3. The combination, with a lace-braiding machine comprising a plurality of heads or plates arranged in a circle, means for rotating the same, and a plurality of bobbins adapted to be driven by the heads or plates, of pattern-gear-controlled means for forming .sheds of threads extending from temfor controlling the porarily stationary bobbins to the middle of the circle, a ring'having a race and vertical recesses mounted above the heads or plates, a shuttle movable in said race, a toothed rim rotatably mounted on said ring, means driven by said toothed rim for driving the said shuttle, and reversible gearing for rotating said toothed rim.

4.. In a lace-braiding machine, the combination, with a frame, a plurality of heads or plates arranged in a circle in the frame and forming therewith a race,- means for rotating the heads or plates, and a plurality of bobbins adapted to be driven in the said race by the heads or plates, of a plurality of lifters on the said frame for raising threads extending from stationary bobbins to the middle of the said circle and thereby forming sheds, pattern gear controlled'means for actuating said lifters, a shuttle-race mounted above the heads or plates, a shuttle movable in the shuttle-race, and means for driving the shuttle in the shuttle-race.

5. The combination, with a lace-braiding machine, comprising a plurality of heads or plates arranged in a circle, means for roand a plurality of bobbins adapted to be driven by the heads or plates, of pattern-gear-controlled means for forming sheds of threads extending from temporarily stationary bobbins to the middle of the circle, a ring having a race and vertical recesses mounted above the heads or plates, a toothed rim rotatably mounted on said ring, means driven by said toothed rim for driving the said shuttle, and reversible gearing for rotating said toothed rim; a plurality of brackets on said ring, a lifter comprising laterally depending wings guided in each bracket, a lever fulcrumed on each bracket and pivotally attached to the lifter guided and means for actuating the levers. In testimony whereof, I affix my signature "in the presence of two witnesses.

VVILHELM BISDORF. [n s.] Witnesses:

CHAS. J. WRIGHT, L. Norm. 

